diff --git a/crypto.hpp b/crypto.hpp
index 2c63133..1a2c8fa 100644
--- a/crypto.hpp
+++ b/crypto.hpp
@@ -68,7 +68,12 @@ namespace SimpleWeb {
 
         b64 = BIO_new(BIO_f_base64());
         BIO_set_flags(b64, BIO_FLAGS_BASE64_NO_NL);
+// TODO: Cannot find the exact version this change happended
+#if OPENSSL_VERSION_NUMBER <= 0x1000114fL
+        bio = BIO_new_mem_buf((char *)&base64[0], static_cast<int>(base64.size()));
+#else
         bio = BIO_new_mem_buf(&base64[0], static_cast<int>(base64.size()));
+#endif
         bio = BIO_push(b64, bio);
 
         auto decoded_length = BIO_read(bio, &ascii[0], static_cast<int>(ascii.size()));